Rotary carrier.



E. MQKENNA.

ROTARY CARRIER.

APPLIUATION IILED NOV. 2a, 1913.

Patented June 9, 1914..

2 SHEETS-SHEET 1.

NVENTOR EUGENE MKENNA..

WITNESSES Mat-W /KM E. MOKENNA.

ROTARY CARRIER.

APPLICATION TILED NOV. 2B, 1913.

mm mm M m mm m; U WW d 8H E m N e E G U 3% Q/FW ATTORNEY' EUGENEMCKENNA, OF BRACKENRIDGE, PENNSYLVANIA.

ROTARY CARRIER.

Specification of Letters Patent.

Patented June 9, 19114.

Application filed November 28, 1913. Serial No. 803,586.

To all whom it may concern Be it known that I, EUGENE MoKnNNA, a subjectof the King of Sweden, residing at Brackenridge, in the county ofAllegheny and State of Pennsylvania, have invented certain new anduseful Improvements in Rotary Carriers, of which the following is aspecification.

The present invention relates to improvements in rotary carriers, and isdesigned especially for use in connection with metal rolling-mills, asfor instance a mill for rolling sheet steel.

In the present practice, which is almost universal, the plates or sheetsof steel as they emerge from the rollers of the mill, are manuallyconveyed, or assisted in their conveyance, to the table upon which theyare to be stacked, or upon which they are to be detained until a furtherstep in their treatment is to be taken.

The primary object of my invention is the provision of aninstrumentality by means of which the sheets or plates of steel or othermetal may be supported as they emerge from the rolls of the mill andcarried to a suitable location. This purpose I accomplish by means of arotary electromagnet which is located in juxtaposition to the mill andis adapted to attract the steel plate and hold it suspended andsimultaneously carry it to its place of deposit.

In the accompanying drawings I have illustrated one complete example ofthe physical embodiment of my invention constructed according to thebest mode I have thus far devised for the practical application of theprinciples of my invention. Although I have illustrated a mill of thetworoll type, it will be readily understood that I may'use the carrierin combination with other forms of mills, as for instance millsemploying three rolls, where the rolled plate is returned through thetwo upper rolls after passing through the two lower ones, and it will beevident that my conveyer or carrier is equally applicable here, as inother forms of mills.

Figure 1 is a side elevation of so much of a sheet-metal rolling mill asis necessaryto illustrate the application thereto of my 1nvention, thenovel form of carrier being shown in operative position with relation tothe mill. Fig. 2 is a plan view of a frag ment of the rotary carrier orelectro-magnet,

showingthe poles or. contact members of the magnet. Fig. 3 is an endview of a portion of the magnet showing the connection of wires to themagnet poles or cores. Fig. 4: 1s a fragmentary sectional view of a drumforming part of the magnet upon which the poles or contact members ofthe magnet are carried. Fig. 5 is a plan view of Fig. 1.

Fig. 6 is an enlarged fragmentary top plan view showing the bearing forthe shaft of the magnet, a segmental disk, a collector disk, thebrushes, etc., for the supply of electricity to the magnet. Fig. 7 is anend new of Fig. 6 showing the shaft in section.

The rolling mill in connection with which I have illustrated myinvention, is of a well known type and comprises the upper power roll 1,the lower roll 2, and the housing 3 in which the rolls are adapted torevolve as usual. The metallic sheet is fed through the rolls from leftto right in Fig. 1, and Fig. 1 illustrates the purpose of my rotarycarrier, wherein it will be seen that the forward end of the sheet whichhas passed through the rollers or rolls is held elevated from the table1.

The rotary carrier I have designated by the numeral 5 as a whole, andthis carrier is supported by means of its shaft or axle (3 from thestandards 7, 7 which are secured at their lower ends to the millhousings as seen at 8, Fig. 1. Journal bearings 9, 9 are provided at theup or ends of the standards in which the sha t 6 maybe revolved, and theshaft is revolved from the power roll 1 by means of a pair of sprockets10, 11, and chain 12. The carrier includes a metallic drum 13 fixed onthe shaft 6, and this drum is covered on its periphery with a pluralityof magnetic poles, arranged in longitudinally alined series, four beinillustrated in the drawings (Fig. 5). Each of these magnetic polescomprises a core 14, preferably of soft iron, securely held to the drumby means of belts or screws 15, 15, and the cores are wire-wound asindicated at 16, in Figs. 4 and 5. Each alined series of poles isinsulated from the other series and from the drum by proper insulatingmaterial, and each pole of each series is provided with the usual wires17 and 18, the former connected to a collector disk 19, and the latter,each connected to a separate and independent segment 20 of a segmentaldisk 21. These two disks 19 and 21. are

fixed to and revolve with the shaft 6 of the carrier, and it will beseen in Fig. 3, especially, that all the collector wires 17 areconnected at the point 22 and then led as a single cable to thecollector disk 19, while the Wires 18 are extended from a segment 20 tothe nearest core on the periphery of the drum.

Each disk 19 and 21 is provided with a brush, as 23 and 24:respectively, the former carried by the holder 25 and the latter by itsholder 26, the usual springs 27 being employed to hold the brushes incontact with the disks. The feed and return wires for the brushes areindicated at 28 and 29 in Fig. '6, and the necessary insulation isindicated at 30 in Fig. 7. The circuit for each pole is thus completedthrough feed wire 28 from the dynamo, brush 23, disk 19, through cable17 to point 22 thence through a Wire 17, soil 16, wire 18, segment 20,brush 24, outlet wire 29 to the dynamo. One row of poles (comprisingfour contact points) may be magnetized or a greater number of rows maybe magnetized as desired, and this difference may be provided for byincreasing the area of the brush 24 so that it will contact with morethan one segment 20. Thus if the brush is incontact with only onesegment, only one row of coils will be energized, while if a greaternumber of segments are in contact with the brush, a corresponding numberof rows will be energized.

he operation of the apparatus is manifest in Fig. 1 wherein a sheet 32is shown as emerging from the rolls of the mill, but is held suspendedas it progresses therefrom, by the rotary carrier 5 whose energizedpoles are holding the metal in the air. It 7 will be understood thatonly the lowermost row of poles is magnetized or energized at one time,but the lowermost row is of 40 it will of course be understood thatother forms or shapes of articles may be used.

Having thus fully described my invention, what I claim as new and desireto secure by Letters Patent is 1. The combination with a mill asdescribed, of a rotary electro-magnetic carrier adapted to sup-port amoving sheet, and means to rotate the carrier simultaneously with theoperation of the mill.

2. The combination with a mill including a driving roll, of a rotaryelectro-magnetic carrier, and means actuated by said roll to operate thecarrier.

3. The combination with a mill including a driving roll, of a rotaryelectro-magnetic carrier, a sprocket wheel on the roll, a secondsprocket on the carrier, and a chain connecting said sprockets.

In testimony whereof I afiix my signature in presence of two witnesses.

EUGENE MoKENNA.

l/Vitnesses W. A. HIRTLE, JOHN F. SWEENY.

